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danluu's profile
Dan Luu
Dan Luu
Dan Luu
@danluu

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Dan Luu

@danluu

https://patreon.com/danluu 

danluu.com
Joined December 2008

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    1. Wesley McGrew‏ @McGrewSecurity 2 Apr 2015
      • Report Tweet

      #HackerShoutOut to @FioraAeterna for teaching me that PPC is just as crazy or worse than x86

      1 reply 4 retweets 14 likes
    2. Dan Luu‏ @danluu 2 Apr 2015
      • Report Tweet
      Replying to @McGrewSecurity

      @McGrewSecurity @FioraAeterna ARMv7 is also a giant mess! I dunno, maybe that's inevitable as ISAs evolve.

      1 reply 0 retweets 0 likes
    3. Steve Canon‏ @stephentyrone 2 Apr 2015
      • Report Tweet
      Replying to @danluu

      @danluu @McGrewSecurity @FioraAeterna ARMv7 "proper" (thumb2 without the legacy bits) is actually pretty damn elegant.

      2 replies 0 retweets 0 likes
    4. Dan Luu‏ @danluu 2 Apr 2015
      • Report Tweet
      Replying to @stephentyrone

      @stephentyrone @McGrewSecurity @FioraAeterna Maybe to program? But the implementation of the decode logic is horrific, worse than x86.

      2 replies 0 retweets 0 likes
    5. Steve Canon‏ @stephentyrone 2 Apr 2015
      • Report Tweet
      Replying to @danluu

      @danluu @McGrewSecurity @FioraAeterna "My critical path speed/efficiency is bound by decode!" -- No one in the past 15 years.

      2 replies 0 retweets 0 likes
    6. Dan Luu‏ @danluu 2 Apr 2015
      • Report Tweet
      Replying to @stephentyrone

      @stephentyrone @McGrewSecurity @FioraAeterna I've implemented both for real chips. Be sarcastic all you want, but it takes more resources.

      1 reply 0 retweets 0 likes
    7. Steve Canon‏ @stephentyrone 2 Apr 2015
      • Report Tweet
      Replying to @danluu

      @danluu @McGrewSecurity @FioraAeterna Never said that it doesn't. But modern ARM ISA is, from a programmer's perspective, lovely.

      1 reply 0 retweets 0 likes
      Dan Luu‏ @danluu 2 Apr 2015
      • Report Tweet
      Replying to @stephentyrone

      @stephentyrone @McGrewSecurity @FioraAeterna Sure, and it's a horrible non-orthogonal series of hacks from an implementation standpoint.

      11:04 AM - 2 Apr 2015
      1 reply 0 retweets 0 likes
        1. New conversation
        1. Steve Canon‏ @stephentyrone 2 Apr 2015
          • Report Tweet
          Replying to @danluu

          @danluu @McGrewSecurity @FioraAeterna You can't both say x86 is nicer *and* complain about non-orthogonality.

          1 reply 0 retweets 0 likes
        2. Steve Canon‏ @stephentyrone 2 Apr 2015
          • Report Tweet
          Replying to @stephentyrone

          @danluu @McGrewSecurity @FioraAeterna x86 has a reasonably regular encoding layout, but the abstract ISA is nearly maximally non-orthogonal.

          1 reply 0 retweets 0 likes
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